/*
 * File      : ssi.h
 * This file is part of FH8620 BSP for RT-Thread distribution.
 *
 * Copyright (c) 2016 Shanghai Fullhan Microelectronics Co., Ltd.
 * All rights reserved
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 *  Visit http://www.fullhan.com to get contact with Fullhan.
 *
 * Change Logs:
 * Date           Author       Notes
 */

#ifndef SSI_H_
#define SSI_H_
#include "Libraries/inc/fh_driverlib.h"
#include <drivers/spi.h>
#include <rtdevice.h>
#include "fh_dma.h"
#define SPI_PRIV(drv) ((struct fh_spi_obj)(drv->priv))

#define FH_SPI_SLAVE_MAX_NO 2

struct spi_controller;
// platform use below
struct spi_slave_platform_data
{
    rt_uint32_t cs_pin;
#define ACTIVE_LOW 1
#define ACTIVE_HIGH 2
    rt_uint32_t actice_level;
};

struct spi_control_platform_data
{
    rt_uint32_t id;
    rt_uint32_t irq;
    rt_uint32_t base;
    rt_uint32_t max_hz;
    rt_uint32_t slave_no;
    rt_uint32_t clk_in;
    // handshake no...
    rt_uint32_t rx_hs_no;
    rt_uint32_t tx_hs_no;

    char *dma_name;
// isr will be the default...
#define USE_ISR_TRANSFER 0
#define USE_DMA_TRANSFER 1
    rt_uint32_t transfer_mode;
    struct spi_controller *control;
    struct spi_slave_platform_data plat_slave[FH_SPI_SLAVE_MAX_NO];
};

struct spi_controller;
// driver use below.......
struct spi_slave_info
{
    struct rt_spi_device spi_device;
    struct spi_controller *control;
    struct spi_slave_platform_data plat_slave;
    rt_uint32_t id;
    // spi control will use to find all the slave info..
    struct spi_slave_info *next;
};

struct spi_dma
{
    char *dma_name;
#define DMA_BIND_OK 0
#define DMA_BIND_ERROR 1
    rt_uint32_t dma_flag;
    // bind to the dma dev..
    rt_uint32_t rx_hs;
    rt_uint32_t tx_hs;
    rt_uint8_t *rx_dummy_buff;
    rt_uint8_t *tx_dummy_buff;
    struct rt_dma_device *dma_dev;
    struct dma_transfer tx_trans;
    struct dma_transfer rx_trans;
    struct spi_controller *control;
};

struct spi_controller
{
    rt_uint32_t id;
    rt_uint32_t irq;
    rt_uint32_t base;
    rt_uint32_t max_hz;
    rt_uint32_t slave_no;
    rt_uint32_t clk_in;
    // bind to the platform data....
    struct spi_control_platform_data *plat_data;

// rt_uint32_t dma_xfer_flag;

#define XFER_USE_ISR 0
#define XFER_USE_DMA 1
    rt_uint32_t xfer_mode;

    struct spi_dma dma;
    rt_uint32_t dma_complete_times;
    struct rt_spi_bus spi_bus;
    struct spi_slave_info *spi_slave;
    struct rt_spi_message *current_message;
    struct rt_completion transfer_completion;
    struct rt_semaphore xfer_lock;
    struct fh_spi_obj obj;
    rt_uint32_t received_len;
    rt_uint32_t transfered_len;
    void *priv;
};

void rt_hw_spi_init(void);

#endif /* SPI_H_ */
